苎麻/LLDPE复合材料力学性能的研究  

MECHANICAL PROPERTIES OF RAMIE/LLDPE LAMINATE

作　　者：许瑞[1] 徐闻[1] 范英[1] 罗利琴[1] 

机构地区：[1]四川大学高分子材料工程国家重点实验室高分子研究所,成都610065

出　　处：《复合材料学报》2001年第4期23-28,共6页Acta Materiae Compositae Sinica

摘　　要：研究了成型工艺、碱液及硅烷偶联剂预处理对苎麻 / L L DPE复合材料力学性能的影响。结果表明 :经碱液、KH- 5 5 0和 A- 15 1硅烷偶联剂分别预处理后 ,苎麻 / L L DPE复合材料的拉伸性能均有不同程度的提高 ,拉伸强度由 5 1.0 MPa分别提高到 10 2 .6 MPa、83.6 MPa及 89.8MPa。经 A- 15 1预处理后 ,材料的弯曲强度及弯曲模量由 2 3.1MPa、1.5 8GPa提高到 81.6 MPa、6 .0 1GPa,单位面积总冲击能及动态弯曲强度由 30 .9k J/ m2、31.3MPa提高到 37.8k J/ m2、10 6The effect of molding conditions and pretreatment of ramie with alkali or silane on mechanical properties of ramie weave/LLDPE laminate is studied. The results show that the laminate, molding at 140°C with a pressure of 7.35 MPa, has optimal mechanical properties. In comparison with untreated ramie, the tensile strength changed from 51.0 MPa (untreated) to 102.6 MPa, 83.6 MPa and 89.8 MPa respectively in case the weave was pretreated with alkali, KH-550 or A-151; the flexural strength, flexural modulus, total impact energy per unit area and dynamic flexural strength are increased to 81.6 MPa, 6.01 GPa, 37.8 kJ/m2 and 106 MPa from 23.1 MPa, 1.58 GPa, 30.9 kJ/m2 and 31.1 MPa respectively.

关 键 词：苎麻 苎麻/LLDPE复合材料 硅烷偶联剂 力学性能 天然植物纤维 

分 类 号：TB332[一般工业技术—材料科学与工程]